Eh, I think you might think heat pumps are more complicated than they are. I think they’re about as complicated as a furnace. At the end of the day, in both your just pumping a gas from one place to another, changing the state of the gas, and then running that past air to heat or cool it.

China has a bad ratio of young people to old people. They have a lot of people, but as the population ages there will be fewer working people supporting more retired people. It’s not just about money either. There are a finite number of nurses or caretakers in a country at any given time, so it will mean higher ratio of people needing care to those able to give it. It’s a complex issue that almost every country is going to be dealing with more in the future, but China will probably feel it more than average.

I would say that it’s too early for anyone to know what a more solidified etiquette will be. So for now just do whatever you want so long as you pay attention to any changes in public opinion or rule changes.